12023661631 has 6 divisors (see below), whose sum is σ = 12569159120. Its totient is φ = 11500893228.

The previous prime is 12023661613. The next prime is 12023661641. The reversal of 12023661631 is 13616632021.

12023661631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12023661631 - 2¹⁵ = 12023628863 is a prime.

It is a super-2 number, since 2×12023661631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12023661593 and 12023661602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023661641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11363991 + ... + 11365048.

Almost surely, 2^12023661631 is an apocalyptic number.

12023661631 is a deficient number, since it is larger than the sum of its proper divisors (545497489).

12023661631 is an equidigital number, since it uses as much as digits as its factorization.

12023661631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22729085 (or 22729062 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 12023661631 in words is "twelve billion, twenty-three million, six hundred sixty-one thousand, six hundred thirty-one".